Self-Hosted GitLab? CVE-2026-97229 Is Being Exploited, Check Your Version

GitLab CI regex flaw CVE-2026-97229 exploited, guidance for Indian teams

If your team runs its own GitLab server, this one needs attention this week. CVE-2026-97229 is a CVSS 10.0 integer overflow in the regular expression compiler used by GitLab CI/CD. A crafted regex in a CI/CD configuration can let an attacker run code on the server. GitLab shipped fixes on 12 October 2026, and CISA added the flaw to its Known Exploited Vulnerabilities catalogue on 29 October 2026.

Which versions are affected

  • 19.2 branch: fixed in 19.2.8
  • 19.3 branch: fixed in 19.3.5
  • 19.4 branch: fixed in 19.4.2
  • GitLab.com and GitLab Dedicated are already patched

The root cause sits in Onigmo, the regex engine inside Ruby, so source or custom builds with their own Ruby may need a separate Ruby update.

A short action list

  • List every self-managed GitLab instance, including test and forgotten ones
  • Upgrade each one to the fixed version for its branch
  • Turn off open sign-up and limit who can push to public projects until patched
  • Review recent .gitlab-ci.yml changes, unknown users and odd processes under the git user
  • Rotate CI/CD variables, deploy keys and runner tokens if you suspect misuse

GitLab servers often hold cloud credentials and deployment keys, and CERT-In's six-hour reporting rule can apply if you find signs of compromise.

Read the full GitLab guide for Indian teams here: GitLab CVSS 10 flaw: what to do now

Published by Affix Center, a Mumbai-based IT services company. See our cybersecurity and VAPT services.

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